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bismuthate; sodium potassium niobate; lead-free piezoelectric ceramics; piezoelectric properties; dielectric properties 1 Introduction Piezoelectric ceramics are widely applied in the devices..., BANDO H, ITOH M. Phase diagram and enhanced piezoelectricity in the strontium titanate doped potassium–sodium niobate solid solution [J]. Phys Status Solidi A, 2005, 202(6): R57-R60. [3] LIN Dun-min......
aqueous solution with polyacrylonitrile-potassium titanium hexacyanoferrate (Ⅱ) spherical composite adsorbent DU Zhihui, JIA Mingchun, MEN Jinfeng (Department of Nuclear Energy Science and Technology, Naval University of Engineering, Wuhan 430033, China) Abstract: Polyacrylonitrile-potassium titanium hexacyanoferrate (Ⅱ) spherical composite adsorbents (PAN-KTiCF) were prepared to remove cesium ions......
(RSD)为2.2%(n=5). 关键词:铂; 四丁基溴化铵; 碘化钾; 浮选分离; platinum; tetrabutyl ammonium bromide; potassium iodide; floatation separation; [全文内容正在添加中] ......
Al~(3+)基本不被萃取,实现了Bi~(3+)与上述金属离子的分离,对合成水样和锌铋合金中Bi~(3+)的分离和测定,结果满意. 关键词:铋; 正丙醇; 碘化钾; 氯化钠; 萃取分离; bismuth; n-propyl alcohol; potassium iodide; sodium chloride; extraction separation; [全文内容正在添加中] ......
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甲基蓝褪色阻抑动力学光度法测定痕量镍王洪福1,苏智先2,张素兰2,何黎明0,刘丽2(1.四川省绵阳市绵阳师范学院化学与化学工程学院2.绵阳师范学院 生命科学与技术学院,四川绵阳 621000)摘 要:在HCl介质中及65℃加热条件下,痕量Ni(Ⅱ)对溴酸钾氧化甲基蓝褪色的反应具有灵敏的阻抑作用.研究了最佳实验条件,建立了阻抑动力学光度法测定痕量Ni(Ⅱ)的新光度分析方法.在602 nm处,非阻抑反应吸光度(A0)与阻抑反应的吸光度(A)的差值ΔA与Ni(Ⅱ)的质量浓度ρ在0.101.50μg/25 mL范围内呈......
,表观活化能为50.05 kJ/mol.方法用于炼钢烧结矿样品中痕量钒(Ⅴ)的测定,回收率在100%~101%之间. 关键词:钒; 高碘酸钾; 结晶紫; 催化光度法; 烧结矿; vanadium; potassium periodate; crystal violet; catalytic spectrophotometry; sinter; [全文内容正在添加中] ......
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学镀镍; 电镀铜镍; roughening; ABS plastics; potassium permanganate; Cr-free pretreatment; electroless Ni plating; Cu-Ni alloy electroplating; [全文内容正在添加中] ......
60.92 kJ/mol.方法用于炼钢烧结矿样品中痕量钒(Ⅴ)的测定,其回收率在101%~102%的范围,符合痕量分析的要求. 关键词:催化动力学光度法; 高碘酸钾; 亚甲基蓝; 钒(Ⅴ); 烧结矿; catalytic kinetic spectrophotometry; potassium periodate; methylene blue; vanadium(Ⅴ); sinter......